/*
 *  Copyright 2008-2010 NVIDIA Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */


#pragma once

#include <thrust/detail/cstdint.h>

// functions to handle memory alignment

namespace thrust {
namespace detail {
namespace util {

template <typename T>
T* align_up(T* ptr, detail::uintptr_t bytes) {
    return (T*)(bytes * (((detail::uintptr_t) ptr + (bytes - 1)) / bytes));
}

template <typename T>
T* align_down(T* ptr, detail::uintptr_t bytes) {
    return (T*)(bytes * (detail::uintptr_t(ptr) / bytes));
}

template <typename T>
bool is_aligned(T* ptr, detail::uintptr_t bytes = sizeof(T)) {
    return detail::uintptr_t(ptr) % bytes == 0;
}

} // end namespace util
} // end namespace detail
} // end namespace thrust

